/* C/ObjC/C++ command line option handling.
- Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Contributed by Neil Booth.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "opts.h"
#include "options.h"
#include "mkdeps.h"
+#include "target.h"
#ifndef DOLLARS_IN_IDENTIFIERS
# define DOLLARS_IN_IDENTIFIERS true
static bool verbose;
/* If -lang-fortran seen. */
-static bool lang_fortran = false;
+bool lang_fortran = false;
/* Dependency output file. */
static const char *deps_file;
warn_pointer_arith = c_dialect_cxx ();
warn_write_strings = c_dialect_cxx();
+ /* By default, C99-like requirements for complex multiply and divide. */
+ flag_complex_method = 2;
+
deferred_opts = XNEWVEC (struct deferred_opt, argc);
result = lang_flags[c_language];
{
default:
if (cl_options[code].flags & (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX))
- break;
+ {
+ if ((option->flags & CL_TARGET)
+ && ! targetcm.handle_c_option (scode, arg, value))
+ result = 0;
+ break;
+ }
#ifdef CL_Fortran
if (lang_fortran && (cl_options[code].flags & (CL_Fortran)))
break;
if (c_dialect_cxx ())
warn_sign_compare = value;
warn_switch = value;
- warn_strict_aliasing = value;
- warn_string_literal_comparison = value;
- warn_always_true = value;
+ set_Wstrict_aliasing (value);
+ warn_address = value;
+ warn_strict_overflow = value;
+ warn_array_bounds = value;
/* Only warn about unknown pragmas that are not in system
headers. */
/* C++-specific warnings. */
warn_reorder = value;
warn_nontemplate_friend = value;
+ warn_cxx0x_compat = value;
+ if (value > 0)
+ warn_write_strings = true;
}
cpp_opts->warn_trigraphs = value;
global_dc->warning_as_error_requested = value;
break;
- case OPT_Werror_implicit_function_declaration:
- mesg_implicit_function_declaration = 2;
+ case OPT_Werror_implicit_function_declaration:
+ /* For backward compatibility, this is the same as
+ -Werror=implicit-function-declaration. */
+ enable_warning_as_error ("implicit-function-declaration", value, CL_C | CL_ObjC);
break;
case OPT_Wformat:
disable_builtin_function (arg);
break;
+ case OPT_fdirectives_only:
+ cpp_opts->directives_only = 1;
+ break;
+
case OPT_fdollars_in_identifiers:
cpp_opts->dollars_in_ident = value;
break;
flag_implicit_templates = value;
break;
+ case OPT_flax_vector_conversions:
+ flag_lax_vector_conversions = value;
+ break;
+
case OPT_fms_extensions:
flag_ms_extensions = value;
break;
flag_gen_declaration = 1;
break;
+ case OPT_femit_struct_debug_baseonly:
+ set_struct_debug_option ("base");
+ break;
+
+ case OPT_femit_struct_debug_reduced:
+ set_struct_debug_option ("dir:ord:sys,dir:gen:any,ind:base");
+ break;
+
+ case OPT_femit_struct_debug_detailed_:
+ set_struct_debug_option (arg);
+ break;
+
case OPT_idirafter:
add_path (xstrdup (arg), AFTER, 0, true);
break;
if (flag_inline_functions)
flag_inline_trees = 2;
+ /* By default we use C99 inline semantics in GNU99 or C99 mode. C99
+ inline semantics are not supported in GNU89 or C89 mode. */
+ if (flag_gnu89_inline == -1)
+ flag_gnu89_inline = !flag_isoc99;
+ else if (!flag_gnu89_inline && !flag_isoc99)
+ error ("-fno-gnu89-inline is only supported in GNU99 or C99 mode");
+
/* If we are given more than one input file, we must use
unit-at-a-time mode. */
if (num_in_fnames > 1)
if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
flag_exceptions = 1;
- /* -Wextra implies -Wsign-compare, -Wmissing-field-initializers and
- -Woverride-init, but not if explicitly overridden. */
+ /* -Wextra implies -Wtype-limits, -Wclobbered,
+ -Wempty-body, -Wsign-compare,
+ -Wmissing-field-initializers, -Wmissing-parameter-type
+ -Wold-style-declaration, and -Woverride-init,
+ but not if explicitly overridden. */
+ if (warn_type_limits == -1)
+ warn_type_limits = extra_warnings;
+ if (warn_clobbered == -1)
+ warn_clobbered = extra_warnings;
+ if (warn_empty_body == -1)
+ warn_empty_body = extra_warnings;
if (warn_sign_compare == -1)
warn_sign_compare = extra_warnings;
if (warn_missing_field_initializers == -1)
warn_missing_field_initializers = extra_warnings;
+ if (warn_missing_parameter_type == -1)
+ warn_missing_parameter_type = extra_warnings;
+ if (warn_old_style_declaration == -1)
+ warn_old_style_declaration = extra_warnings;
if (warn_override_init == -1)
warn_override_init = extra_warnings;
if (warn_overlength_strings == -1 || c_dialect_cxx ())
warn_overlength_strings = 0;
+ /* Adjust various flags for C++ based on command-line settings. */
+ if (c_dialect_cxx ())
+ {
+ if (!flag_permissive)
+ {
+ flag_pedantic_errors = 1;
+ cpp_opts->pedantic_errors = 1;
+ }
+ if (!flag_no_inline)
+ {
+ flag_inline_trees = 1;
+ flag_no_inline = 1;
+ }
+ if (flag_inline_functions)
+ flag_inline_trees = 2;
+ }
+
+ /* In C, -Wconversion enables -Wsign-conversion (unless disabled
+ through -Wno-sign-conversion). While in C++,
+ -Wsign-conversion needs to be requested explicitly. */
+ if (warn_sign_conversion == -1)
+ warn_sign_conversion = (c_dialect_cxx ()) ? 0 : warn_conversion;
+
+
/* Special format checking options don't work without -Wformat; warn if
they are used. */
if (!warn_format)
"-Wformat-zero-length ignored without -Wformat");
warning (OPT_Wformat_nonliteral,
"-Wformat-nonliteral ignored without -Wformat");
+ warning (OPT_Wformat_contains_nul,
+ "-Wformat-contains-nul ignored without -Wformat");
warning (OPT_Wformat_security,
"-Wformat-security ignored without -Wformat");
}
- /* C99 requires special handling of complex multiplication and division;
- -ffast-math and -fcx-limited-range are handled in process_options. */
- if (flag_isoc99)
- flag_complex_method = 2;
+ /* -Wimplicit-function-declaration is enabled by default for C99. */
+ if (warn_implicit_function_declaration == -1)
+ warn_implicit_function_declaration = flag_isoc99;
+
+ /* If we're allowing C++0x constructs, don't warn about C++0x
+ compatibility problems. */
+ if (cxx_dialect == cxx0x)
+ warn_cxx0x_compat = 0;
if (flag_preprocess_only)
{
{
unsigned int i;
- /* Enable parser debugging, if requested and we can. If requested
- and we can't, notify the user. */
-#if YYDEBUG != 0
- yydebug = set_yydebug;
-#else
if (set_yydebug)
- warning (0, "YYDEBUG was not defined at build time, -dy ignored");
-#endif
+ switch (c_language)
+ {
+ case clk_c:
+ warning(0, "The C parser does not support -dy, option ignored");
+ break;
+ case clk_objc:
+ warning(0,
+ "The Objective-C parser does not support -dy, option ignored");
+ break;
+ case clk_cxx:
+ warning(0, "The C++ parser does not support -dy, option ignored");
+ break;
+ case clk_objcxx:
+ warning(0,
+ "The Objective-C++ parser does not support -dy, option ignored");
+ break;
+ default:
+ gcc_unreachable ();
+ }
i = 0;
for (;;)
if (flag_dump_macros == 'M')
flag_no_output = 1;
+ /* By default, -fdirectives-only implies -dD. This allows subsequent phases
+ to perform proper macro expansion. */
+ if (cpp_opts->directives_only && !cpp_opts->preprocessed && !flag_dump_macros)
+ flag_dump_macros = 'D';
+
/* Disable -dD, -dN and -dI if normal output is suppressed. Allow
-dM since at least glibc relies on -M -dM to work. */
/* Also, flag_no_output implies flag_no_line_commands, always. */
actually output the current directory? */
if (flag_working_directory == -1)
flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE);
+
+ if (cpp_opts->directives_only)
+ {
+ if (warn_unused_macros)
+ error ("-fdirectives-only is incompatible with -Wunused_macros");
+ if (cpp_opts->traditional)
+ error ("-fdirectives-only is incompatible with -traditional");
+ }
}
/* Add include path with a prefix at the front of its name. */
}
}
}
+ else if (cpp_opts->directives_only)
+ cpp_init_special_builtins (parse_in);
include_cursor = 0;
push_command_line_include ();
flag_no_gnu_keywords = iso;
flag_no_nonansi_builtin = iso;
flag_iso = iso;
+ cxx_dialect = cxx98;
}
/* Set the C++ 0x working draft "standard" (without GNU extensions if ISO). */
flag_no_gnu_keywords = iso;
flag_no_nonansi_builtin = iso;
flag_iso = iso;
- flag_cpp0x = 1;
+ cxx_dialect = cxx0x;
}
/* Handle setting implicit to ON. */
{
warn_implicit = on;
warn_implicit_int = on;
- if (on)
- {
- if (mesg_implicit_function_declaration != 2)
- mesg_implicit_function_declaration = 1;
- }
- else
- mesg_implicit_function_declaration = 0;
+ warn_implicit_function_declaration = on;
}
/* Args to -d specify what to dump. Silently ignore
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